T(n,k)=Number of nXk 0..1 arrays with every element unequal to 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A317896
T(n,k)=Number of nXk 0..1 arrays with every element unequal to 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =0a(6) =0a(7) =1a(8) =1a(9) =0a(10) =0a(11) =2a(12) =4a(13) =2a(14) =0a(15) =0a(16) =5a(17) =13a(18) =13a(19) =5a(20) =0a(21) =0a(22) =16a(23) =59a(24) =82a(25) =59a(26) =16a(27) =0a(28) =0a(29) =45
External references
- oeis: A317896